I can t open with adobe acrobat 8 standard some pdf files but works wiht adobe reader IX

 I try to open some pdf files with adobe acrobat 8 on an Windows 11 PC, but receive the error:

There was an error opening this document . The file is damaged and could not be repaired.

if I try to open them with adobe reader IX it works. Also if I try to open them on a PC with Windows 10 using Adobe 8 Standard, I can do that.

Any idea why I receive that error?